aborn



3 Sheets-Sheet 1.

f (N-o Model.)

G. P. ABORN.

SINKING PUMP..

Patented Oct. 19, 1897.

THE Norms Pneus co, PHoTaLlmo.. wsnmumu. n. c

G. P. ABOR-N. SINKING PUMP.

3 Sheets-Sheet 2'.

(No Model.)

No. 592,038. Patented 001;. 19, 1897.

@M/ P. w VO m. oo o.o`..// L vo` (No Model.) G P *ABOR'N 9 Sheets-Sheet 3.

SI-NKING PUMP.

the shaft'.

Fries.

v"PATENT GEORGE P. ABORN, OF WARREN, MASSACHUSETTS, ASSIGN OR TO THE GEO.

F. BLAKE MANUFACTURING COMPANY, OF NEW'YORK, N. \Y.v A'

SlNKlNG-PUIVIP.

SPECIFICATION forming part of Letters Patent No. 592,038, ldated October 19, 189'?.

Application filed August 10, 1 8 9 6.

To all whom it may concern;

Be it known that I, GEORGE P. ABORN, a citizen of the United States, residing at Warren, in the countyofWorcesterpand State of Massachusetts, have invented an Improvement in Sinking-Pumps, of which the following is a specification. v

In mining operationsv it is often necessary to sink a shaft of comparatively small diameter and this often extends to a great depth, and it is very difficult to get into this shaft a pump that is sufficiently small not to obstruct the shaft, and at 'the same time sufficiently powerful to eject the water.

The object of the present invention is to obtain a very powerful pump that occupies i but little space inthe diameter ofthe shaft,

but is extended suficientlyvertically to obtain the power necessary for raising the water from the shaft.

With the aforesaid obj ect in view the pump is made double-acting, and two steam-cylinders are connectedV up in line with each other and are direct-acting upon the plunger of the pump; and by using two or more steamcylinders working in the same direction and upon the same pistonrod the necessary power can be obtained, although the cylinders may be of comparatively small diameter, and henceoccupybut a small space inV the shaft that is being sunk; and thesteam-cylinders arranged as a tandem engine are provided with valves actuated by contact with the valve-stems of the pistons at the extreme top and bottom movements to regulate the action of the steam in moving the valve by a valve-moving piston. Hence lche power of the engine can be exerted throughout the entire stroke in giving movement to the plunger of the pump and the direction of motion will be Vreversed at theends of the stroke by the action of the steam'without outside. connections or levers that would be liable to injury as the pumpmight be lowered or raised inY In the drawings, Figure lisa vertical section of the engine and pump. Fig. 2 is a front elevation, partly in section. Figs. 3 and 4 show the valve and valve-moving piston.

Fig. 5 is a plan view of the engine, and Fig.

serial No. 602,284. (No model.)

6 is a diagrammatic illustration ofthe ports and connections. Fig. 7 is an elevation of the steam-cylinders with steam-chest cover, valve, and valve-movingpiston removed; and Fig. 8 is a horizontal section in larger size at :n Fig. l.v f f The pump is made of the cylinders A and A', connected together by the pipes' and iianges B B', forming the Waterways, and the plunger C is cylindrical and passes into both of the' cylinders, and there are packing-boxes or glandsyat D that make'tight connections between the cylinders and the plunger but allow the plunger to work freelyas it is reciprocated within the two cylinders.,

The bottom head E of 'the cylinder A is preferably plain, andthe head E of the cylinder A is'provided with a gland lorfpackingbox F, through which passes the piston-rod G, and the same is permanently connected to the plunger C and extends into the steamcylinders hereinafter described, and by this rod the plunger is reciprocated.V p

The valve-chest His provided with inletvalves 3 to admit the Water fromthe induction-pipe I, and the valves 6 open into the chamber leading to the pipe B, and the pipe B' is connected to the induction-pipe I at its lower end and extends up to the valve-chest H', in which are the inlet-valves 5 and outletvalves '7, andthe pipe Bjoins with a pipe from above the valves 7 and continues as a rising discharge-pipeK.

The valves employed may be of any desired construction and the respective pipes B and B are to be sufliciently strong to properly connect the two 'cylinders A and A' and they may be provided with strengtheningilanges of any desired construction, and the movable covers to the valve-chests are shown as vertical, but they may be arranged in'any desired manner. Y p

By the before-described construction the two cylinders can be permanently connected IOO upper cylinder as the plunger rises, so as to equalize the resistance to the reci procation of the plunger.

The steam-cylinders L and M are preferably cast together and bored out inline with each other, and there is a packing-gland N between the two cylinders and around the piston-rod, and there are pistons O and O' in the respective cylinders and connected with the piston-rod G, and there arc suitable columns or frame connections P between the head E' of the cylinder A and the head Q of the cylinder M, so as to permanently connect the respective heads and retain the parts in line with each other.

The upperhead R of the cylinder L is bolted in position, and there are projecting lugs on the cylinder and on the head receiving the bolts 8, to which the links 9 are connected and brought to a common ring for the purpose of suspending the sinking-pump and raising and lowering the saine as required from time to time. The pistons O and O occupy similar positions in the respective steam-cylinders and move together. Hence steam has to be simultaneously admitted upon the uppersides of the pistons when they reach the upper ends of the cylinders, and simultaneously admitted below the pistons when they reach the lower ends of the cylinders; and with this object in View the ports 10 and 11.are connected from the upper ends of the cylinders and the ports 12 and 13 from the lower ends of the cylinders, andthese ports terminate at the valveports 14 and 15 respectively, and there is an intermediate exhaust-port 1G and the valve S is of ordinary character, usually a plain B slide-valve, and the parts are conveniently arranged so that the slide-valve S is moved transversely in admitting the steam to the respective ports, and with this object in view the valve-moving piston T is provided in the cylindrical ends of the steam-chest cover U, and steam is admitted by the pipe V into the steam-chcst, and the valve-moving piston is made with a piston at each end in the cylindrical portion of the steam-chest cover, and there are horns or projections 17 on the Valve entering a mortise in the middle portion of the valve-moving piston, so that the valve S will be moved by the action of steam upon the valve-moving piston T, such Valve being .moved transversely of the engine-cylinders.

At the top end of the cylinder L and the bottom end of the cylinder M there are valves 18 and 19, the stems of which pass through tubular guides and project into the cylinders, so that as the pistons complete the stroke downward the valve 19 will be opened, and as they complete the stroke upward the valve 1S will be opened. Each valve 18 or 19 is advantageously made cylindrical to slide in a cylindrical chest, and there is a spring 2O below the valve 19 to lift the same and cause it to seat itself upon an annular seat at the upper end of the valve-chamber as the piston rises, and the valve 1S usually will drop and seatit-self by gravity, and it is lifted by the upper piston as the piston completes its upward stroke. Pressure of the live steam tends to keep the valves 1S and 19 on their seats. There is a port 21 leading to the outer side of each piston-valve 18 and 19, so that the pressure of the live steam tends to keep the piston-valves upon their seats, and thc ports 22 and 23 lead from the outer portions of the steam-chest cover U to the cylinders containing the valves 18 and 19, and such ports 22 and open laterally through the cylinders for these valves 1S and 19, and the ends of the ports are covered by the valves when such valves rest on their seats, and the ports 24 and 25 lead to the exhaust of the engine.

The operations of the parts are as follows: As the pistons are moved upward by the pressure of the steam the upper piston O acts upon the stem of the valve 18 and lifts the same, and in so doing opens a communication from the port 22 to the exhaust-port 2i, and the pressure of steam in the portion of the steam-chest outside one end ot the valve-mov ing piston is relieved and thc pressure of the steam moves such piston and the valve S to direct the steam-pressure upon the upper ends of the pistons O and O', and as these descend the valve 18 again returns to its seat andthe steam-pressure at both ends of the valve-moving piston equalizes by the steam passing through small holes in the pistons, as seen in Figs. it and S, and when the pistons approach the lower ends of the cylinders the piston O acts upon the stem of the valve 19, moving the same oft its scat and opening a communication between the exhaust-port 25 and the port 23, leading to the opposite end of the valve-moving cylinder, so that the steam being exhausted therefrom the pressure causes the piston and valve to move in the opposite direction and again supply steam below the pistons and open the exhaust for the steam above the pistons. In this manner the tandem steam cylinder and pistons are moved to act directly upon the same piston-rod, and the valves 1S and 19, that are moved by the direct action of the piston at the respective ends of the strokes, direct the pressure of steam so as to move the valve-moving piston and valve and change the action of the steam upon the piston, and there is no risk of the ports becoming obstructed in their movements or for the steam-pistons to occupya neutral position where the valves will not be moved, because the moment either of the valves 1S or 19 is acted upon the connections are made through the ports in such a manner that the exhaust is opened behind the valve-moving piston to insure a motion to such piston and to the valve by the pressure of the steam.

It is advantageous to provide a rock-shaft 2G to be moved by a hand-lever or wrench, and upon which rock-shaft a lever 27 is connected at the inner end to give motion to the valve-moving piston T, first in one direction and then in the other, in case such piston IOO IIO

IZO

' tioning the size of the steam-cylinders to the size of the plunger, having reference to the pressure of steam made use of in the cylinders. This sinking-pump can be operated vby air or other fluid under pressure, as well as by steam.

I claim as my invention- -1. The combination in a pumping-engine, of two pressure-cylinders in line with each other, two pistons in the cylinders and a piston-rod connecting such pistons,.a doubleacting pump and its plunger in line with and connected to the piston rod, a valve and valve-seat and one port connecting to the upper ends of the two pressure-cylinders and another port connecting with the lower ends of the two pressure-cylinders for admitting live rluid simultaneously to act upon the pistons in the same direction, and an exhaustport for allowing the exhaust to pass from either the top or the bottom ofthe cylinders, a valve-moving piston and a cylinder containing the same, and an automatic mechanism for causing the pressure to move the piston and valve when the cylinder pistons reach the upper and lower ends of their strokes, substantially as set forth.

2. The combination in a pumping-engine, of two pressure-cylinders and an intermediate head in one casting, and packing in the head between the two cylinders for the piston-rod, two pistons and the connecting piston-rod within the cylinders, a pump-cylinder in line with the pressure-cylinders and rigidly connected therewith, a plunger in the pump connected to the piston-rod of the steam-pistons, a valve at the upper end of the upper pressure-cylinder and at the lower end of the lower pressure-cylinder, veach valve being cylindrical'and having a stem passing into the cylinder and acted upon by the piston, ports leading from the cylindrical cases of the valves to the chest, a valve and valvemoving piston and pressure and exhaust ports, substantially as speciiied, whereby the valve-moving piston and valve are moved automatically by the pressure of the iiuid, the valves at the top and bottom ends-of the pressure-cylinders regulating the exhaust from the outer ends of the cylinder containing the valve-moving piston, substantially as set forth.

3. The combination in a pumping-engine,

of two pressure-cylinders in line with each` other, two pistons in the cylinders and a piston-rod connecting such pistons, a doubleacting pump and its plunger inline with and connected to the piston-rod, a valve andl valve-seat and one port connecting to the upper ends of the two pressure-cylinders, and another port connecting with the lower ends of the two pressure-cylinders for admitting uid simultaneously to act upon the pistons in either one direction or the other, and an exhaust-port for allowing the exhaust to pass from either the top or the bottom of the cylinders, and a valve-moving piston and valves for the same acted upon by the pistons near the ends of the strokes, substantially as specied.

Signed by me this lst day oi' August, 1896.

GEORGE P. ABORN.

Witnesses:

GEORGE DE LAVAL, FRANCIS J. DE LUCE. 

